You might know RFID as the technology that Big Brother uses to track your every move. Quickly, don the tinfoil hats!!

Only kidding. RFID is useful for sensing and identifying tagged people and objects for access control, automation and a whole range of different applications. This basic RFID tag works in the 125kHz RF range and comes with a unique 40-bit ID. It is not reprogrammable.

This blank, smooth, mildly flexible RFID tag is ready for your logo (or hand-drawn scribble).